Calendar



FIG. 1 is a front view of a calendar showing my new design;

FIG. 2 is an enlarged view of the left portion of FIG. 1 shown separately for ease of disclosure;

FIG. 3 is an end view thereof;

FIG. 4 is a side view thereof; and,

FIG. 5 is a back view thereof.

FIG. 6 is an enlarged view of the upper portion of FIG. 2 shown separately for ease of disclosure; and,

FIG. 7 is an enlarged view of another portion taken from FIG. 2 shown separately for ease of disclosure. 

CLAIM The ornamental design for a calendar, as shown and described. 